diff options
Diffstat (limited to 'sound/ppc/daca.c')
-rw-r--r-- | sound/ppc/daca.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/sound/ppc/daca.c b/sound/ppc/daca.c new file mode 100644 index 000000000000..f24a91693616 --- /dev/null +++ b/sound/ppc/daca.c | |||
@@ -0,0 +1,283 @@ | |||
1 | /* | ||
2 | * PMac DACA lowlevel functions | ||
3 | * | ||
4 | * Copyright (c) by Takashi Iwai <tiwai@suse.de> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
19 | */ | ||
20 | |||
21 | |||
22 | #include <sound/driver.h> | ||
23 | #include <linux/init.h> | ||
24 | #include <linux/i2c.h> | ||
25 | #include <linux/i2c-dev.h> | ||
26 | #include <linux/kmod.h> | ||
27 | #include <linux/slab.h> | ||
28 | #include <sound/core.h> | ||
29 | #include "pmac.h" | ||
30 | |||
31 | /* i2c address */ | ||
32 | #define DACA_I2C_ADDR 0x4d | ||
33 | |||
34 | /* registers */ | ||
35 | #define DACA_REG_SR 0x01 | ||
36 | #define DACA_REG_AVOL 0x02 | ||
37 | #define DACA_REG_GCFG 0x03 | ||
38 | |||
39 | /* maximum volume value */ | ||
40 | #define DACA_VOL_MAX 0x38 | ||
41 | |||
42 | |||
43 | typedef struct pmac_daca_t { | ||
44 | pmac_keywest_t i2c; | ||
45 | int left_vol, right_vol; | ||
46 | unsigned int deemphasis : 1; | ||
47 | unsigned int amp_on : 1; | ||
48 | } pmac_daca_t; | ||
49 | |||
50 | |||
51 | /* | ||
52 | * initialize / detect DACA | ||
53 | */ | ||
54 | static int daca_init_client(pmac_keywest_t *i2c) | ||
55 | { | ||
56 | unsigned short wdata = 0x00; | ||
57 | /* SR: no swap, 1bit delay, 32-48kHz */ | ||
58 | /* GCFG: power amp inverted, DAC on */ | ||
59 | if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 || | ||
60 | i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0) | ||
61 | return -EINVAL; | ||
62 | return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL, | ||
63 | 2, (unsigned char*)&wdata); | ||
64 | } | ||
65 | |||
66 | /* | ||
67 | * update volume | ||
68 | */ | ||
69 | static int daca_set_volume(pmac_daca_t *mix) | ||
70 | { | ||
71 | unsigned char data[2]; | ||
72 | |||
73 | if (! mix->i2c.client) | ||
74 | return -ENODEV; | ||
75 | |||
76 | if (mix->left_vol > DACA_VOL_MAX) | ||
77 | data[0] = DACA_VOL_MAX; | ||
78 | else | ||
79 | data[0] = mix->left_vol; | ||
80 | if (mix->right_vol > DACA_VOL_MAX) | ||
81 | data[1] = DACA_VOL_MAX; | ||
82 | else | ||
83 | data[1] = mix->right_vol; | ||
84 | data[1] |= mix->deemphasis ? 0x40 : 0; | ||
85 | if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL, | ||
86 | 2, data) < 0) { | ||
87 | snd_printk("failed to set volume \n"); | ||
88 | return -EINVAL; | ||
89 | } | ||
90 | return 0; | ||
91 | } | ||
92 | |||
93 | |||
94 | /* deemphasis switch */ | ||
95 | static int daca_info_deemphasis(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo) | ||
96 | { | ||
97 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | ||
98 | uinfo->count = 1; | ||
99 | uinfo->value.integer.min = 0; | ||
100 | uinfo->value.integer.max = 1; | ||
101 | return 0; | ||
102 | } | ||
103 | |||
104 | static int daca_get_deemphasis(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) | ||
105 | { | ||
106 | pmac_t *chip = snd_kcontrol_chip(kcontrol); | ||
107 | pmac_daca_t *mix; | ||
108 | if (! (mix = chip->mixer_data)) | ||
109 | return -ENODEV; | ||
110 | ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0; | ||
111 | return 0; | ||
112 | } | ||
113 | |||
114 | static int daca_put_deemphasis(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) | ||
115 | { | ||
116 | pmac_t *chip = snd_kcontrol_chip(kcontrol); | ||
117 | pmac_daca_t *mix; | ||
118 | int change; | ||
119 | |||
120 | if (! (mix = chip->mixer_data)) | ||
121 | return -ENODEV; | ||
122 | change = mix->deemphasis != ucontrol->value.integer.value[0]; | ||
123 | if (change) { | ||
124 | mix->deemphasis = ucontrol->value.integer.value[0]; | ||
125 | daca_set_volume(mix); | ||
126 | } | ||
127 | return change; | ||
128 | } | ||
129 | |||
130 | /* output volume */ | ||
131 | static int daca_info_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo) | ||
132 | { | ||
133 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | ||
134 | uinfo->count = 2; | ||
135 | uinfo->value.integer.min = 0; | ||
136 | uinfo->value.integer.max = DACA_VOL_MAX; | ||
137 | return 0; | ||
138 | } | ||
139 | |||
140 | static int daca_get_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) | ||
141 | { | ||
142 | pmac_t *chip = snd_kcontrol_chip(kcontrol); | ||
143 | pmac_daca_t *mix; | ||
144 | if (! (mix = chip->mixer_data)) | ||
145 | return -ENODEV; | ||
146 | ucontrol->value.integer.value[0] = mix->left_vol; | ||
147 | ucontrol->value.integer.value[1] = mix->right_vol; | ||
148 | return 0; | ||
149 | } | ||
150 | |||
151 | static int daca_put_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) | ||
152 | { | ||
153 | pmac_t *chip = snd_kcontrol_chip(kcontrol); | ||
154 | pmac_daca_t *mix; | ||
155 | int change; | ||
156 | |||
157 | if (! (mix = chip->mixer_data)) | ||
158 | return -ENODEV; | ||
159 | change = mix->left_vol != ucontrol->value.integer.value[0] || | ||
160 | mix->right_vol != ucontrol->value.integer.value[1]; | ||
161 | if (change) { | ||
162 | mix->left_vol = ucontrol->value.integer.value[0]; | ||
163 | mix->right_vol = ucontrol->value.integer.value[1]; | ||
164 | daca_set_volume(mix); | ||
165 | } | ||
166 | return change; | ||
167 | } | ||
168 | |||
169 | /* amplifier switch */ | ||
170 | #define daca_info_amp daca_info_deemphasis | ||
171 | |||
172 | static int daca_get_amp(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) | ||
173 | { | ||
174 | pmac_t *chip = snd_kcontrol_chip(kcontrol); | ||
175 | pmac_daca_t *mix; | ||
176 | if (! (mix = chip->mixer_data)) | ||
177 | return -ENODEV; | ||
178 | ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0; | ||
179 | return 0; | ||
180 | } | ||
181 | |||
182 | static int daca_put_amp(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) | ||
183 | { | ||
184 | pmac_t *chip = snd_kcontrol_chip(kcontrol); | ||
185 | pmac_daca_t *mix; | ||
186 | int change; | ||
187 | |||
188 | if (! (mix = chip->mixer_data)) | ||
189 | return -ENODEV; | ||
190 | change = mix->amp_on != ucontrol->value.integer.value[0]; | ||
191 | if (change) { | ||
192 | mix->amp_on = ucontrol->value.integer.value[0]; | ||
193 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG, | ||
194 | mix->amp_on ? 0x05 : 0x04); | ||
195 | } | ||
196 | return change; | ||
197 | } | ||
198 | |||
199 | static snd_kcontrol_new_t daca_mixers[] = { | ||
200 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | ||
201 | .name = "Deemphasis Switch", | ||
202 | .info = daca_info_deemphasis, | ||
203 | .get = daca_get_deemphasis, | ||
204 | .put = daca_put_deemphasis | ||
205 | }, | ||
206 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | ||
207 | .name = "Master Playback Volume", | ||
208 | .info = daca_info_volume, | ||
209 | .get = daca_get_volume, | ||
210 | .put = daca_put_volume | ||
211 | }, | ||
212 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | ||
213 | .name = "Power Amplifier Switch", | ||
214 | .info = daca_info_amp, | ||
215 | .get = daca_get_amp, | ||
216 | .put = daca_put_amp | ||
217 | }, | ||
218 | }; | ||
219 | |||
220 | |||
221 | #ifdef CONFIG_PMAC_PBOOK | ||
222 | static void daca_resume(pmac_t *chip) | ||
223 | { | ||
224 | pmac_daca_t *mix = chip->mixer_data; | ||
225 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08); | ||
226 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG, | ||
227 | mix->amp_on ? 0x05 : 0x04); | ||
228 | daca_set_volume(mix); | ||
229 | } | ||
230 | #endif /* CONFIG_PMAC_PBOOK */ | ||
231 | |||
232 | |||
233 | static void daca_cleanup(pmac_t *chip) | ||
234 | { | ||
235 | pmac_daca_t *mix = chip->mixer_data; | ||
236 | if (! mix) | ||
237 | return; | ||
238 | snd_pmac_keywest_cleanup(&mix->i2c); | ||
239 | kfree(mix); | ||
240 | chip->mixer_data = NULL; | ||
241 | } | ||
242 | |||
243 | /* exported */ | ||
244 | int __init snd_pmac_daca_init(pmac_t *chip) | ||
245 | { | ||
246 | int i, err; | ||
247 | pmac_daca_t *mix; | ||
248 | |||
249 | #ifdef CONFIG_KMOD | ||
250 | if (current->fs->root) | ||
251 | request_module("i2c-keywest"); | ||
252 | #endif /* CONFIG_KMOD */ | ||
253 | |||
254 | mix = kmalloc(sizeof(*mix), GFP_KERNEL); | ||
255 | if (! mix) | ||
256 | return -ENOMEM; | ||
257 | memset(mix, 0, sizeof(*mix)); | ||
258 | chip->mixer_data = mix; | ||
259 | chip->mixer_free = daca_cleanup; | ||
260 | mix->amp_on = 1; /* default on */ | ||
261 | |||
262 | mix->i2c.addr = DACA_I2C_ADDR; | ||
263 | mix->i2c.init_client = daca_init_client; | ||
264 | mix->i2c.name = "DACA"; | ||
265 | if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0) | ||
266 | return err; | ||
267 | |||
268 | /* | ||
269 | * build mixers | ||
270 | */ | ||
271 | strcpy(chip->card->mixername, "PowerMac DACA"); | ||
272 | |||
273 | for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) { | ||
274 | if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0) | ||
275 | return err; | ||
276 | } | ||
277 | |||
278 | #ifdef CONFIG_PMAC_PBOOK | ||
279 | chip->resume = daca_resume; | ||
280 | #endif | ||
281 | |||
282 | return 0; | ||
283 | } | ||